phorphiex | 60b290310f67adb0ae186b4b938ca466a6b55653b2519261fa425127f5500a1f

Resubmissions

21-06-2024 19:37

240621-yca7cszgnd 10

09-06-2024 17:07

13-05-2024 17:36

12-05-2024 17:17

12-05-2024 16:15

10-05-2024 18:05

10-05-2024 17:48

Analysis

max time kernel
149s
max time network
159s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
10-05-2024 17:48

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General

Target

Dropper/Phorphiex.exe
Size

143KB
MD5

b034e2a7cd76b757b7c62ce514b378b4
SHA1

27d15f36cb5e3338a19a7f6441ece58439f830f2
SHA256

90d3580e187b631a9150bbb4a640b84c6fa990437febdc42f687cc7b3ce1deac
SHA512

1cea6503cf244e1efb6ef68994a723f549126fc89ef8a38c76cdcc050d2a4524e96402591d1d150d927a12dcac81084a8275a929cf6e5933fdf62502c9c84385
SSDEEP

3072:VMb/kbqjO/3FxV8l8wiEXHPV9r99rWhzAxH7wpjv4z:VMxo3Z8BvV9rL6h2H7wJ4

Score

10^/10

phorphiex evasion loader persistence trojan upx worm

Malware Config

Signatures

Modifies Windows Defender Real-time Protection settings 3 TTPs 4 IoCs

evasion trojan

Modify Registry

T1112

Windows Service

T1543.003

Disable or Modify Tools

T1562.001

Processes:

wcfgmgr32.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection	wcfgmgr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScanOnRealtimeEnable = "1"	wcfgmgr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1"	wcfgmgr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1"	wcfgmgr32.exe

Phorphiex
Malware family which infects systems to distribute other malicious payloads such as ransomware, stealers and cryptominers.
worm trojan loader phorphiex

Windows security bypass 2 TTPs 6 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

wcfgmgr32.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	wcfgmgr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesOverride = "1"	wcfgmgr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallOverride = "1"	wcfgmgr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	wcfgmgr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	wcfgmgr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	wcfgmgr32.exe

Executes dropped EXE 1 IoCs

Processes:

wcfgmgr32.exe

pid process

344 wcfgmgr32.exe

pid	process
344	wcfgmgr32.exe

UPX packed file 3 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral2/memory/3940-0-0x0000000000400000-0x0000000002CE4000-memory.dmp	upx
C:\Windows\3049586940303040\wcfgmgr32.exe	upx
behavioral2/memory/344-9-0x0000000000400000-0x0000000002CE4000-memory.dmp	upx

Windows security modification 2 TTPs 7 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

wcfgmgr32.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	wcfgmgr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	wcfgmgr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesOverride = "1"	wcfgmgr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallOverride = "1"	wcfgmgr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	wcfgmgr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	wcfgmgr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AutoUpdateDisableNotify = "1"	wcfgmgr32.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

Phorphiex.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\WCfgMgr32 = "C:\\Windows\\3049586940303040\\wcfgmgr32.exe"	Phorphiex.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WCfgMgr32 = "C:\\Windows\\3049586940303040\\wcfgmgr32.exe"	Phorphiex.exe

Drops file in Windows directory 3 IoCs

Processes:

Phorphiex.exe

description	ioc	process
File created	C:\Windows\3049586940303040\wcfgmgr32.exe	Phorphiex.exe
File opened for modification	C:\Windows\3049586940303040\wcfgmgr32.exe	Phorphiex.exe
File opened for modification	C:\Windows\3049586940303040	Phorphiex.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

Phorphiex.exe

description	pid	process	target process
PID 3940 wrote to memory of 344	3940	Phorphiex.exe	wcfgmgr32.exe
PID 3940 wrote to memory of 344	3940	Phorphiex.exe	wcfgmgr32.exe
PID 3940 wrote to memory of 344	3940	Phorphiex.exe	wcfgmgr32.exe

C:\Users\Admin\AppData\Local\Temp\Dropper\Phorphiex.exe
"C:\Users\Admin\AppData\Local\Temp\Dropper\Phorphiex.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:3940

C:\Windows\3049586940303040\wcfgmgr32.exe
C:\Windows\3049586940303040\wcfgmgr32.exe
2⤵
- Modifies Windows Defender Real-time Protection settings
- Windows security bypass
- Executes dropped EXE
- Windows security modification
PID:344

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4288,i,7012731823941922179,12386606396608877869,262144 --variations-seed-version --mojo-platform-channel-handle=1304 /prefetch:8
1⤵
PID:2296

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads

C:\Windows\3049586940303040\wcfgmgr32.exe
Filesize
143KB

MD5
b034e2a7cd76b757b7c62ce514b378b4

SHA1
27d15f36cb5e3338a19a7f6441ece58439f830f2

SHA256
90d3580e187b631a9150bbb4a640b84c6fa990437febdc42f687cc7b3ce1deac

SHA512
1cea6503cf244e1efb6ef68994a723f549126fc89ef8a38c76cdcc050d2a4524e96402591d1d150d927a12dcac81084a8275a929cf6e5933fdf62502c9c84385

Download Submit
memory/344-9-0x0000000000400000-0x0000000002CE4000-memory.dmp

Filesize
40.9MB

Download
memory/344-13-0x0000000000400000-0x0000000002CE4000-memory.dmp

Filesize
40.9MB

Download
memory/344-14-0x0000000000400000-0x0000000002CE4000-memory.dmp

Filesize
40.9MB

Download
memory/3940-0-0x0000000000400000-0x0000000002CE4000-memory.dmp

Filesize
40.9MB

Download
memory/3940-2-0x0000000002E50000-0x0000000002F50000-memory.dmp

Filesize
1024KB

Download
memory/3940-3-0x0000000000400000-0x0000000000408000-memory.dmp

Filesize
32KB

Download
memory/3940-12-0x0000000000400000-0x0000000002CE4000-memory.dmp

Filesize
40.9MB

Download